Improvement in lamps



PERKINS & HOUSE.

Lamp.

Patented March 14, I865.

UNITED STATES PATENT OF ICE.

JOHN M. PERKINS AND MARK W. HOUSE, OF CLEVELAND, HIO.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 46,8 l9, dated March14, 1865.

To all whom it may concern.-

Be it known that we, J OHN M. PERKINS and MARK W. HoUsE, of Cleveland,in the county of Guyahoga, in the State of Ohio, have invented a new anduseful device to be attached to lamps, which extinguishes the light whenany attempt is made toremove the screwtop for the purpose of refillingor replenishing the oil in the lamp; and we do hereby declare that thefollowing is a full and exact description thereof, reference being hadto the accompanying drawings and to the letters of reference markedthereon.

The same letters mark the same parts in both figures.

Figure I is a perspective drawing of a handlamp with the chimney andcone-piece removed. Fig. II is a pers ective view of the feed-shaftremoved from the lamp, showing two star-wheels near the center of theshaft which acts upon the wick; also the milled head for the purpose ofregulating the flame. On the end of this shaft is the wheel A, and justbelow the shaft is the segment B, the device to be considered.

The nature of our invention consists in attaching the wheel A to thefeed-shaft S to any of the well-known oil-burners; also the piece orsegment B with slots,,eogs, or their equivalent, attached to thelamp-cap O or any stationary portion of the lamp in such a manner thatwhen the burner D is being unscrewed the wheel A will come in contactwith the piece or segment B, thereby rotating the feed shaft Ssufliciently to depress the wick and extinguish the flame.

By this simple and arbitrary device no lamp can be exploded by its ownflame, and it becomes a perfect safety-lam p and thereby prevents greatdestruction of life and property that has resulted from the use of thelamp in its present form by attempting to refill the same when low ornearly out, thus leaving a large space in the lamp for gas alreadygenerated, which rushes out of the lamp andinto the flame of the burningwick and thus producing explosion.

This safety attachment is so arbitrary in its movements that the flameis extinguished before one-quarter of a revolution is made with thescrew-top.

What we claim as our invention, and desire to secure by. Letter Patent,is

Wheel A and segment B, when arranged as specified, or their equivalent.

JNO. M. PERKINS. MARK W. HOUSE. Witnesses:

A. J. MARVIN, ALFRED ELWELL.

